Rojas-Trejos, C. A., González-Velasco, J., & López-Ramírez, M. A. (2018). Optimization Model for the Location of Prehospital Care Ambulances in the city of Cali Colombia. International Journal of Combinatorial Optimization Problems and Informatics, 8(3), 64–70. Retrieved from https://ijcopi.org/ojs/article/view/20